What year and model car? Most of the older vehicles have to relearn their memory of how to run. How old was the old battery? It's possible the alternator could have killed it, and that also can cause the symptoms of what you are seeing now.

Change your fuel filter and you should be good to go.

Huh?,check the tire pressure also,that should help about as much.

Jamie Griffith

How does changing to a new battery affect engine idle??????????????

It can affect the cars computer. When power is denied to the "computer brain" sometimes it has to "recalibrate" itself to run correctly--idle---and so on. The same thing happened on my Dads car when we changed the bat. It took a week before it ran good again.

not to sound like a jerk but Im ASE certified and wouldnt blow smoke (nonsmoker), the fuel filter would be the place to start if problem persists. I say this because his ride between work and home is quite long thru town and should be more then enough to recalibrate his system. Fuel Mapping takes only minutes for the computer to accomplish.

I certainly was in the right! .....( toecutter at the spot) Phalanxman 6

Chrysler Product

If you had no driveability issue before the battery failure....No worries...happens to our fleet vehicles all the time when the drivers run the batteries flat.

Having a sizeable fleet of Chrysler/Dodge vehicles and 4 Jeeps in my garage, I can assure you that the comments about the computer needing to "relearn" are correct. Start the vehicle and take it on a short drive...problem will be solved. As an alternative, you can start the vehicle and moderate the throttle settings in park for a couple of minutes and it will also "relearn".

Cop: Sir, have you been drinking? Driver: Why? Is there a fat girl in my backseat?

When you take a battery out the computer has to relearn all the sensors,it can take 1 or so of driving for the computer to relearn.Drive on the E-way for 45 mins .

600LE,OS55,OS PowerBoost pipe,Align 610's,Spartan

first off i would change the fuel filter cheap and easy also will help with fuel milage but the stalling problem could be 2 things. both easy to do. first get a 10mm socket wrech disconnect the vacum line and wiring to throtle body flip it on it side and there will be a round motor with 3 pins and held in by 2 tamper proof torque screws be careful if they re tight coming out u may have to heat them with a little torche to loosen the locktite dont force as they will break N it a pain in the tail end to remove them. this is called the IAC motor. basically a servo with a linear throw. on the end is a pindel that regulates the idle. it get dirty and cloged clean with throtle body cleaner or carb clean (gum out/ 2+2) clean the passages on the inside where the iac goes. clean the whole t-body of all carbon. 2ND option is the MAP sensor.

That deffinately sounds like either bad muffler bearings or maybe your blinker fluid is a little low.

Not sure about Jeep products but on my Ford, when the IAC was going bad, a good tap with a screw driver handle got the motor to work again for a few starts. You have to do it with the engine running so get some one to hold the gas down to keep the motor running (not much just enough to keep it running) The part cost me about $100 on the Ford. If a hit with the screw driver works you know what you have to do.

you just need to drive it. it will relearn itself takes time

if it ideled fine before the battery went it is not the IAC. put it in gear one foot on the break and one slightly on the gas to keep it running slowly leave your foot off the gas until it will idel by itself